Update instructions in README, add comments in draco.pl, fix bug v0.2.1

$comment in print_comment_chain() was changed to $comment_data to
prevent confusion in future.

We have to check if url has "/" at the end because if it does have it
then previously we were appending "$comment_data->{id}.json" to it
which makes the url look like:

      http://<reddit>/<post_id>//<comment_id>.json

And reddit doesn't like that, reddit wants it to be:

      http://<reddit>/<post_id>/<comment_id>.json

Notice the double '/' in previous link.

1 files changed, 1 insertions, 1 deletions

diff --git a/draco.1 b/draco.1
index a9d2856..0363e07 100644
--- a/draco.1
+++ b/draco.1
@@ -6,7 +6,7 @@
 .Nd a script to convert reddit thread to Org document
 .Sh SYNOPSIS
 .Nm draco
-.Op Fl dv
+.Op Fl dhv
 .Ar <url>
 .Sh DESCRIPTION
 .Nm